Dental rubber



A CQO'EION 01 PENNSYLV CE A. SWARTZ, F HUGUENOT PARK, AND NEW YORK, ASSIGNORS TO THE S. S. E DENTAL MANUFACTURING COMPANY,

WAR 1. OTTMYER, 0F IPItINOE BAY,

DENTAL RUBBER.

Ito Drawing.

To all whom it may cmwem:

Be it known that we, Tonnnnon A. SWARTZ, a citizen of the United States, and a resident of Huguenot Park, in the county of Rich- 5 mond, State of New York, and EDGAR F. OTTMYER, a citizen of the United States, and a resident of Prince Bay, in the county of Richmond, State of New York, have invented certain new and useful Improvements in Dental Rubbers,vof which the following is a specification.

Our invention relates articularly to that class of rubber commo y known as baselate rubber, and capable of use in making enture plates. 1

It is well known by the dental profession that rubber suitable for use in making denture base plate, and known as base-plate rubber, must contain such a percentage of rubber as to afford sufiicient strength and toughness to withstand the strains incident to biting and chewing, and that such rubber as heretofore produced was of a color much darker than the natural color of the human as gums, and that where it was desired to disguise the plate in the month, said plate was rovided with a veneer of pink rubber, own as veneer or pink rubber, and containing a less proportion of rubber, and consequently of less strength and toughness than base-plate rubber, but more nearly simulating the natural color of the human ums. g The object of our invention is to provide at a rubber compound that will simulate the natural pink color of the human gums of the mouth, yet afiording the strength and toughness suficient to withstand the strains incident to biting and chewing, and having all of the desirable characterlstics that are inherent in base-plate rubber as heretofore produced.

Specifically stated, the form of our invention as hereinafter described, comprehends a as vulcanizable compound consisting of rubber,

sulphur, and compounding ingredients including pigments or coloring matters, which when vulcanized produces a strong bar tough substance resembling in color, the to color of the natural n ormaI gums of the human mouth.

Our invention also includes all of the various novel features as hereinafter more definitely specified.

Wed

- mating) the specific proportions matter,

d; Witnesses:

that a vulcanizable dental rubber Specification of Letters Patent. Patented Apr. 18, 1922- Application an m at, 1am. 8eria1110.813,4.

compound, which when vulcanized produces a pink substance closely simulating the natural gums of the human jaw, and having suificient strength, hardness and toughness to be employed in the making of base plates for artificial dentures, may be producedby combinin rubber, sulphur and compounding ingre ients includin pigments or coloring matters such as litiopone and similar .white materials and Vermilion and similar red materials, in the proportion approxithirty-two (32%) per cent rubber, ten (1 per cent sulphur, and fifty-eight (58%) per cent compounding ingredients including pigments or coloring matters, similar to those stated above.

We do not desire to limit our invention to herein set forth, as it is obvious that various modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Having thus described our invention, we claim 1. A vulcanizable dental base plate composition comprising rubber, sulphur, and compounding ingredients including pigments or coloring matters, which when vulcanized, produces a strong, hard, tough substance, suitable for making dental base plates and having a pink color approximating the pink color of the natural gums of the human mouth.

2. A vulcanizable dental base plate comosition comprising approximately 32% ruber, 10% sulphur, and 58% compounding ingredients including pigments and coloring which when vulcanized produces a strong, hard, tough substance suitable for making denture base plates and having a color approximating the pink color of the natural gums of the human mouth.

In witness whereof, we have hereunto set our hands the 2nd day of July, A. D, 1919, and the 2nd day of July, A. 1)., 1919, respectively.

' TORRENCEA. SWARTZ.

Crims'rornnn 1. Kane,

Em A. Porno, Jr.

EDGAR F. OTTMYER.

Rice, A. Form, Jr. 

